Amathusia. The confusingly complex genus.

[Psyche]

Amathusia : Epithet of Greek goddess Aphrodite; refers to her worship in the city of Amathus ie Lady of Amathus.

Amathusia comprises seven species in peninsular Malaysia.
They are very difficult to ID in fieldshots.
While males may be IDed by the secondary sexual characters (hair tufts, etc) the females are extremely difficult even with specimens in hand.
As Eliot said, females are best IDed by comparison with confirmed males.
As with closely related species intermediates occur.
I will deal only with the males from museum specimens in the difficult cases.

Two species are immediately IDed by the fact that the outer margins of the FW median (discal) band are strongly notched.

1. A. ochraceofusca.( Dark ochreous.)
FW outer margin of median band notched roughly equally deep at vein 3 and vein 4.
https://yutaka.it-n.jp/ama/50350001.html
https://wingscales.com/Nymphalidae/A...-ochraceofusca
https://www.gbif.org/occurrence/2847204555
https://www.gbif.org/occurrence/2847204939
https://www.gbif.org/occurrence/2847204565
Females
https://www.gbif.org/occurrence/2847204939
(mis-IDed.)
https://www.gbif.org/occurrence/2847204950

2. A. schoenbergi.( After Schoenberg.)
FW outer margin of median band more deeply notched at the higher vein 4 than at vein 3.
https://thaibutterflies.com/Butterfl...a-schoenbergi/
Female.
https://yutaka.it-n.jp/ama/50340001.html